Electric toothbrush



FIG. 1 is a side perspective view of the new design of an electric toothbrush;

FIG. 2 is another side perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken (dashed) lines show portions of the electric toothbrush that form no part of the claimed design. 

CLAIM The ornamental design for an electric toothbrush, as shown and described. 